Saw attachment.



No. 672,767. .Patanted Apr. 23, IBM. F. o. HELSTEN.

SAW ATTACHMENT.

(Application med ab. 20, 1901. (No Model.)

IN VE N TOR A TTORNEYS- me NORRIS versus no. r-noTo-umo" WASHINGTON. n. c.

UNITED STATES PATENT FFICE.

FRANS OSCAR HELSTEN, OF LAURIUM, MICHIGAN.

SAW ATTAC H M ENT.

SPECIFICATION forming part of Letters Patent N 0. 672,767, dated April 23, 1901.

Application filed February 20, 1901. Serial No. 48,092. (No model.)

To all whom it may concern.-

Be it known that I, FRANS OSCAR HELSTEN, a citizen of the United States, and a resident of Laurium, in the county of Houghton and State of Michigan, have invented a new and Improved Saw Attachment, of which the following is a full, clear, and exact description.

The purpose of this invention is to provide a device for enabling one to keep a handsaw oiled during the use thereof.

To this end the invention comprises a poculiarly-constructed oil-receptacle fitted in the handle of the saw and having devices by which the oil may be caused steadily to flow over the saw-blade.

This specification is a specific description of one form of the invention, while the claims are definitions of the actual scope thereof.

Reference is to be had to the accompanying drawings, forminga part of this specification, in which similar characters of reference indicate corresponding parts in both views.

Figure 1 is a side View of the invention applied to a saw, a part of the saw being broken away; and Fig. 2 is an enlarged section of the oil-reservoir.

The handle a of the saw has a cavity a. formed therein, in which is fitted the oil-reservoir b. This is preferably cylindrical in form and provided with a contracted discharge spout or nozzle b, the mouth of which bears on the upper edge of the saw-blade c, a recess 0' being cut in the saw for this purpose. (See Fig. 1.) The cavity a has a shoulder a formed on the upper side wall thereof, and with this shoulder engages a spring-lock 12 which is fastened to the reservoir b and is arranged yieldingly to engage the said shoulder a to hold the reservoir in place. By pressing the lock 19 inward toward the reser- Ell voir b the lock may be disengaged from the shoulder and the reservoir displaced.

The discharge-nozzle bof the reservoir bis commanded by a needle-valve d, the stem (1' of which is threaded and projected through the upper end or head of the reservoir b, the threads of the stem 01 engaging corresponding threads in the head of the reservoir. A thumb-wheel d is attached to the outer end of the stem d to permit the adjustment of the valve d, so as to regulate the flow of oil through the nozzle 1). The reservoir 6 is adapted to be supplied with oil through an orifice b in the head thereof, and this orifice is commanded by a screw-plug e.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination with a handsaw, the blade of which is provided with a recess in its upper edge and the handle of which is provided with a cavity juxtaposed to the recess, of an oil-reservoir set in the cavity and having a discharge-nozzle bearing in the recess in the upper edge of the saw-blade, to feed the oil to the blade.

2. The combination of a handsaw, the bandle of which is provided with a recess therein, said recess having a shoulder on one of its walls, and an oil-reservoir set in the recess and provided with a catch engaging the shoulder removably to hold the reservoir in place.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANS OSCAR HELSTEN.

Witnesses:

JOHN A. SIKANER, E. P. BAST. 

